Monarthrum fasciatum

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Monarthrum fasciatum (click on image to enlarge it)
Author(s): Javier Mercado, Colorado state University
Source: IPM Images

Monarthrum fasciatum (Say, 1826)

This ambrosia beetle is found in eastern North America. There are also record from parts of western North America. It is polyphagous and infests a variety of forest trees, including some fruit and nut trees. However, mainly weakened and dying trees are attacked. The adults are usually 2-3 mm long and are coloured in two shades of brown.